pixelfed/app/Services/InstanceService.php

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<?php
namespace App\Services;
use App\Instance;
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use App\Util\Blurhash\Blurhash;
use Cache;
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class InstanceService
{
const CACHE_KEY_BY_DOMAIN = 'pf:services:instance:by_domain:';
const CACHE_KEY_BANNED_DOMAINS = 'instances:banned:domains';
const CACHE_KEY_UNLISTED_DOMAINS = 'instances:unlisted:domains';
const CACHE_KEY_NSFW_DOMAINS = 'instances:auto_cw:domains';
const CACHE_KEY_STATS = 'pf:services:instances:stats';
const CACHE_KEY_TOTAL_POSTS = 'pf:services:instances:self:total-posts';
const CACHE_KEY_BANNER_BLURHASH = 'pf:services:instance:header-blurhash:v1';
const CACHE_KEY_API_PEERS_LIST = 'pf:services:instance:api:peers:list:v0';
public function __construct()
{
ini_set('memory_limit', config('pixelfed.memory_limit', '1024M'));
}
public static function getByDomain($domain)
{
return Cache::remember(self::CACHE_KEY_BY_DOMAIN.$domain, 3600, function () use ($domain) {
return Instance::whereDomain($domain)->first();
});
}
public static function getBannedDomains()
{
return Cache::remember(self::CACHE_KEY_BANNED_DOMAINS, 1209600, function () {
return Instance::whereBanned(true)->pluck('domain')->toArray();
});
}
public static function getUnlistedDomains()
{
return Cache::remember(self::CACHE_KEY_UNLISTED_DOMAINS, 1209600, function () {
return Instance::whereUnlisted(true)->pluck('domain')->toArray();
});
}
public static function getNsfwDomains()
{
return Cache::remember(self::CACHE_KEY_NSFW_DOMAINS, 1209600, function () {
return Instance::whereAutoCw(true)->pluck('domain')->toArray();
});
}
public static function software($domain)
{
$key = 'instances:software:'.strtolower($domain);
return Cache::remember($key, 86400, function () use ($domain) {
$instance = Instance::whereDomain($domain)->first();
if (! $instance) {
return;
}
return $instance->software;
});
}
public static function stats()
{
return Cache::remember(self::CACHE_KEY_STATS, 86400, function () {
return [
'total_count' => Instance::count(),
'new_count' => Instance::where('created_at', '>', now()->subDays(14))->count(),
'banned_count' => Instance::whereBanned(true)->count(),
'nsfw_count' => Instance::whereAutoCw(true)->count(),
];
});
}
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public static function refresh()
{
Cache::forget(self::CACHE_KEY_BANNED_DOMAINS);
Cache::forget(self::CACHE_KEY_UNLISTED_DOMAINS);
Cache::forget(self::CACHE_KEY_NSFW_DOMAINS);
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Cache::forget(self::CACHE_KEY_STATS);
Cache::forget(self::CACHE_KEY_API_PEERS_LIST);
self::getBannedDomains();
self::getUnlistedDomains();
self::getNsfwDomains();
return true;
}
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public static function totalLocalStatuses()
{
return config_cache('instance.stats.total_local_posts');
}
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public static function headerBlurhash()
{
return Cache::rememberForever(self::CACHE_KEY_BANNER_BLURHASH, function () {
if (str_ends_with(config_cache('app.banner_image'), 'headers/default.jpg')) {
return 'UzJR]l{wHZRjM}R%XRkCH?X9xaWEjZj]kAjt';
}
$cached = config_cache('instance.banner.blurhash');
if ($cached) {
return $cached;
}
$file = config_cache('app.banner_image') ?? url(Storage::url('public/headers/default.jpg'));
$image = imagecreatefromstring(file_get_contents($file));
if (! $image) {
return 'UzJR]l{wHZRjM}R%XRkCH?X9xaWEjZj]kAjt';
}
$width = imagesx($image);
$height = imagesy($image);
$pixels = [];
for ($y = 0; $y < $height; $y++) {
$row = [];
for ($x = 0; $x < $width; $x++) {
$index = imagecolorat($image, $x, $y);
$colors = imagecolorsforindex($image, $index);
$row[] = [$colors['red'], $colors['green'], $colors['blue']];
}
$pixels[] = $row;
}
// Free the allocated GdImage object from memory:
imagedestroy($image);
$components_x = 4;
$components_y = 4;
$blurhash = Blurhash::encode($pixels, $components_x, $components_y);
if (strlen($blurhash) > 191) {
return 'UzJR]l{wHZRjM}R%XRkCH?X9xaWEjZj]kAjt';
}
ConfigCacheService::put('instance.banner.blurhash', $blurhash);
return $blurhash;
});
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}
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}